Nut-lock.



J. PILLIG.

NUT LOOK.

APPLIOATION FILED 11m 11, 1910.

Patented Sept. 6, 1910.

IVIg/{ENTI H ATTUHNEY.

WITNESSES;

3, (5. @W M Mb x2 Specification of Letters Patent. Application filed June 11, 1910.

969,404. Patented Sept.

Serial No. 566,364.

T all whom it may concern: to receive the wrn s The portions of the Be it known that I, J OHN PILLIG, a citizen spring-washer, 9, adjacent to the respective of the nited States, residing at Amster- Wings, 10, are ent upward out of the plane dam, county of Montgomery, and State of New York, have invented certain new and and said sprrn -washer is made of re so useful Improvements in N ut-Locks, of which silient sheet-metal so that when the nut is the following is a specification. I screwed tightly against the washer, 4, the re invention relates to such rmpror eben spring-washer will be compressed and merits and consists of the novel construction straightener etween the bottom of the re anc combination Or parts hereinafter ecess, 12, am: e oss r, as shown in Fi .2, scribed and subsequently claimed. -1us causing the dogs, 11, to swing inward e erence may be had to the accompanyi into a c ose engagement with the ratchet ing drawings and the reference characters 1 teeth, 8, on the nut, toprevent ackward romarked thereon which orrn a part of this tat-ion o the nut. orced backward rotaspecification. rmrlar characters refer 0 tion however can be imparted to the nut by similar par ts 1n the several figures ther em t e use of a wrench, resulting in breakirw igure 1 of the drawings is a view in side the dogs 11, and rendering them inoperative elevation of the bolt, nut and spring-w asher for furt rer use To adapt the evice for of my improved nut-lock, with the main urther use, it is necessary merely to replace asher shown in cross-section. Fig. 2 is a the spring-washer, 9 which being stain ed similar view showing the nut locked in poout of comparatively thin sheet-metal is in sition, the head-portion of the bolt being expensive. roken away. Fig. 3 is a bottom plan view I prefer to have the boss, 7, taper inwardly of the main washer detached. Fig. 4 is a as shown, to facilitate its entrance between -top plan view of the spring-washer detached. the dogs, 11, said dogs thus being graduall 1e principal object of the invention is to forced into tighter engagement with the effectively look a nut upon a screw-bolt by ratchet-teeth by reason of both the straightmeans which can be intentionally readily ening of the springqvasher, 9, and the inrendered inoperative, and which can be creasing diameter of the boss, as the nut is readily and cheaply replaced to render the I Screwed into position. lock again effective. \Vhat I claim as new and desire to secure re 'erring to the drawrn s wherem the in by Letters Patent is \entron rs shown in preferred form, l,re re- In a nut-lock, and in combination, a sents an ordinary screw-bolt, screw-threaded screw-bolt; a nut fitting said bolt, and havat 2, to receive a nut, 3, adaptec to engage ing on its inner side a boss formed with a main washer, 4, provided with a spur, 5, ratchet-teeth on its periphery,- amain washer to penetrate or enter a recess in the body, 6 adapted to be enga ed by said nut, and pro to which the bolt is applied, whereby said vided in its outer side with a recess ada ted washer, 4, is prevented from rotation. to receive said boss, means to prevent rotahe nut, is formed with a boss, 7, on tron of said main washer; a spring-washer its inner side, the periphery of which boss adapted to be clamped between said boss and is cut in the form of ratchet-teeth, 8, facing I the ottom of said recess in the main washer in a direction the reverse of that in which I said spring-washer and main washer bern 1e nut requires to be turned to screw it formed to interengage to prevent relative 1o upon the bolt. a ion,- and a dog on sar spring-washer 10o oosely inclosing the bolt is a springadapted to engage the ratchet-teeth on said washer, 9, having at two diametrically opboss. posite points outwardly extending wings, 2. In a nut-lock, and in combination, a l terminating in dogs, 11, adapted to coscrew-bolt; a nut fitting said bolt, and havoperate with the ratchet-teeth, 8, on the ing on its inner side a boss formed with nut 3. ratchet-teeth on its periphery; amain washer The main washer, 4, is formed with a re- I adapted to be engaged by said nut, and process, 12, adapted to receive the boss, 7, and vided in its outer side with a recess adapted the body of the was er, 9, and with notches, to receive said boss and with notches 0 en 13, extending outward from said recess, 12, ing rom said recess,- means to prevent rota;

tion of said main washer; a spring-washer said spring-washer is clamped and straight- 10 adapted to be clamped between said boss ened.

and the bottom of said recess, said spring- In testimony whereof, I have hereunto set washer having portions normally bent away my hand this 7th day of June, 1910. 5 fironi said boss; and wings projecting from T said bent portions of said spring wash er JOEL PILLHI' adapted to occupy said notches in the main \Vitnesses: washer, and terminating in dogs adapted to D. CADY BARTLETT,

engage the ratchet-teeth on said boss when SAFFORD. 

